Fire and smoke detector



FIG. 1 is a top plan view of a fire and smoke detector showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a cross-sectional elevational view, taken on line 3--3 of FIG. 1;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a perspective view thereof. 

The ornamental design for a fire and smoke detector, as shown. 